Surname List: Begins with O


All surnames beginning with O, sorted alphabetically (total individuals):

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1. o 'Beolan (2)
2. o 'Brien (1)
3. o' Bannon (1)
4. o' Bell (9)
5. o' Beolain (1)
6. o' Boyle (1)
7. o' Breen (17)
8. o' Brennan (1)
9. o' Brian (12)
10. o' Brien (227)
11. o' Brien de Thomond (3)
12. o' Brien-Ara (1)
13. o' Bryan (5)
14. o' Bryen (4)
15. o' Byrne (4)
16. o' Caerbhaill (1)
17. o' Cahan (5)
18. o' Callaghan (35)
19. o' Carrol (1)
20. o' Carroll (7)
21. o' Cavanagh (2)
22. o' Cearbhall (2)
23. o' Cheinnselaig (14)
24. o' Chennselaig (1)
25. o' Chorb (1)
26. o' Chuind (1)
27. o' Conaing (1)
28. o' Connell (60)
29. o' Conner (1)
30. o' Conners (1)
31. o' Connor (61)
32. o' Connor-Kerry (1)
33. o' Connough (2)
34. o' Conor (6)
35. o' Conor Sligo (1)
36. o' Crega (1)
37. o' Cuillen (1)
38. o' Daire Rainey (1)
39. o' Dea (2)
40. o' Dell (6)
41. o' Dennel (1)
42. o' Docherty (2)
43. o' Donell (1)
44. o' Donnagan (1)
45. o' Donnel (1)
46. o' Donnell (53)
47. o' Donnell von Tyrconell (3)
48. o' Donnell von Tyrconnell (3)
49. o' Donoghue (1)
50. o' Donovan (3)
51. o' Draine (1)
52. o' Duibhne (1)
53. o' Dungalaig (1)
54. o' Duraghy (1)
55. o' Eagra (1)
56. o' Eidin (1)
57. o' Fallon (2)
58. o' Faolain (2)
59. o' Farrell (2)
60. o' Felan (1)
61. o' Ferral (1)
62. o' Ferrall-Boy (2)
63. o' Flaherty (4)
64. o' Fogarty (1)
65. o' Fogurty (1)
66. o' Garvey (2)
67. o' Grady (42)
68. o' Hagan (3)
69. o' Halloran (1)
70. o' Hara (28)
71. o' Hartigan (1)
72. o' Hea (1)
73. o' Hegerty (4)
74. o' Kane (2)
75. o' Keefe (6)
76. o' Keeff (1)
77. o' Keeley (3)
78. o' Kelly (6)
79. o' Kennedy (8)
80. o' Key (1)
81. o' Killey (1)
82. o' Knightley (2)
83. o' Lalor (1)
84. o' Lavery (2)
85. o' Leary (6)
86. o' Lorcain (1)
87. o' Loughnan (1)
88. o' Madden (2)
89. o' Mahony (1)
90. o' Maille Owen (1)
91. o' Maillend (3)
92. o' Malia (1)
93. o' Malley (3)
94. o' Mara (10)
95. o' Meagber (1)
96. o' Mealy (1)
97. o' Melaghlin (5)
98. o' Moore (14)
99. o' Morda (1)
100. o' More (5)
101. o' Mullane (1)
102. o' Mulloy (1)
103. o' Mulyran (1)
104. o' Murphy (1)
105. o' Neal (11)
106. o' Neale (4)
107. o' Neall (9)
108. o' Neil (3)
109. o' Néill (115)
110. o' Neill de Tyrone (1)
111. o' Nolan (1)
112. o' Phelan (1)
113. o' Pluingceid (1)
114. o' Quin (1)
115. o' Rear (1)
116. o' Regan (1)
117. o' Reilly (6)
118. o' Rorke (5)
119. o' Rourk (2)
120. o' Rourke (1)
121. o' Ruarc (5)
122. o' Ryn (1)
123. o' Shaughnessy (7)
124. o' Shea (1)
125. o' Sullivan (26)
126. o' Sullivan Beare (3)
127. o' Tard la Grange-Keith (1)
128. o' Toole (16)
129. O'Blennis (1)
130. Oachs (4)
131. Oadham (2)
132. Oak (1)
133. Oakden (1)
134. Oakes (33)
135. Oakey (5)
136. Oakleaf (1)
137. Oakley (16)
138. Oaks (6)
139. Oates (7)
140. Obachah (1)
141. Obama (5)
142. Obanion (1)
143. Obbard (1)
144. Obbema (1)
145. Obbens (1)
146. Obdam (1)
147. Obedience (1)
148. Obelink (1)
149. Obelitz (1)
150. Obell (1)
151. Oben (2)
152. Obenberg (1)
153. Obeniche (1)
154. Ober (7)
155. Oberacker zu Sieghartsstein (1)
156. Oberembt (2)
157. Oberhlotzer (1)
158. Oberholster (16)
159. Oberholzer (6)
160. Oberje (2)
161. Oberländer (4)
162. Oberleuter von Lassing (1)
163. Oberlin (2)
164. Obermair (2)
165. Obermayer (2)
166. Obermeyer (1)
167. Obernaür (1)
168. Oberstadt (1)
169. Obertacke (1)
170. Oberti (2)
171. Obijn (1)
172. Obolenska (1)
173. Obolenskaia (1)
174. Obolenskaja (1)
175. Obolensky (18)
176. Obolensky-Neledinsky-Meletzky (4)
177. Oboussier (1)
178. Obreen (12)
179. Obrenović (7)
180. Obrenovic (7)
181. Obrist (1)
182. Obukova (1)
183. Occo (2)
184. Och (2)
185. Ochoa de Ondategui (2)
186. Ochs von Gunzendorf (2)
187. Ochs von Sonnau & Reichersperg (2)
188. Ochsin von Gunzendorf (1)
189. Ochterlony (3)
190. Ocieska (1)
191. Ockel (2)
192. Ockens (4)
193. Ockers (14)
194. Ockers Cau (2)
195. Ockerse (7)
196. Ockersse (27)
197. Ockerz. (1)
198. Ockes (2)
199. Ockhorst (4)
200. Ockhuysen (1)
201. Ockinga (5)
202. Ockstee (1)
203. Ocskay de Ocsko (1)
204. Octavius (1)
205. Octon (1)
206. Odard (2)
207. Odart (5)
208. Odart de Rilly d'Oysonville (1)
209. Odberre (1)
210. Odde (1)
211. Oddie (6)
212. Odding (2)
213. Oddyle (2)
214. Odé (1)
215. Odekerken (1)
216. Odell (18)
217. Odendaal (21)
218. Odendahl (1)
219. Odenhoven (1)
220. Odenthal (1)
221. Oder (3)
222. Odescalchi (29)
223. Odescalchi di Novara (1)
224. Odet (1)
225. Odette (1)
226. Odey (1)
227. Odgers (1)
228. Odier (2)
229. Odijk (1)
230. Odilia (1)
231. Odinck (1)
232. Odingsells (3)
233. Odink (1)
234. Odino (1)
235. Odinot (2)
236. Odinsson (1)
237. Odiorne (1)
238. Odland (4)
239. Odling (1)
240. Odlum (2)
241. Odoe (1)
242. Odoevskaya (2)
243. Odoevsky (1)
244. Odom (4)
245. Odone (4)
246. Odor (1)
247. Odou (1)
248. Odoyevskaya (1)
249. Odrowazowna (1)
250. Odson (1)
251. Odum (1)
252. Odygd (3)
253. Oechslin (1)
254. Oedses (1)
255. Oedtsma (3)
256. Oedtsma van Juckema (3)
257. Oeheim (2)
258. Oehler (1)
259. Oehlmann (1)
260. Oehninger (1)
261. Oeijen (1)
262. Oelbermann (1)
263. Oeler (5)
264. Oelhafen (1)
265. Oeloffse (1)
266. Oelofse (17)
267. Oelrich (2)
268. Oelrichs (5)
269. Oelwein (1)
270. Oem (77)
271. Oem van Arkel (1)
272. Oem van Bochoven (6)
273. Oem van Bockhoven (1)
274. Oem van Bokhoven (5)
275. Oem van Papendrecht (1)
276. Oem van Wijngaarden (34)
277. Oem van Wijngaerden (7)
278. Oem van Wyngaerden (1)
279. Oem van Zevender (2)
280. Oemcens (1)
281. Oenema (4)
282. Oentses (1)
283. Oepkes (2)
284. Oerinck (1)
285. Oerlemans (3)
286. Oertgen (2)
287. Oerthling (1)
288. Oertwein (2)
289. Oertwin (1)
290. Oesau (31)
   291. Oesebrand (1)
292. Oeser (2)
293. Oessendorff (1)
294. Oest (9)
295. Oesterberg (1)
296. Oesterlen (1)
297. Oesterling (1)
298. Oestermann (3)
299. Oesters (1)
300. Oesterschmidt (1)
301. Oestherhaut (1)
302. Oeteren (1)
303. Oeters van Maris (1)
304. Oetgens (10)
305. Oetgens van Waveren (5)
306. Oetgens van Waveren Pancras Clifford (16)
307. Oetgins (2)
308. Oetinger (2)
309. Oetker (9)
310. Oettingen (3)
311. Oettingen Ettinger-Halevi (1)
312. Oevermans (1)
313. Oexle von Friedenberg (1)
314. of Acre (1)
315. of Acton (2)
316. of Agade (2)
317. of Ailech (1)
318. of Albha (1)
319. of Alcester (1)
320. of Aleppo (1)
321. of Allardice (1)
322. of Aller (4)
323. of Allerdale (1)
324. of Anathoth (1)
325. of Androssan (1)
326. of Angeln (3)
327. of Angoulême (1)
328. of Angus (16)
329. of Antioch (1)
330. of Anu (1)
331. of Argyll (3)
332. of Argyllshire (12)
333. of Arimathaea (1)
334. of Armorica (2)
335. of Arrapachtis (1)
336. of Aspinall (4)
337. of Athol (5)
338. of Atholl (6)
339. of Babylon (5)
340. of Balcarrie (1)
341. of Ballagh (1)
342. of Bamborough (4)
343. of Bantry (1)
344. of Barenshill (2)
345. of Bedford (2)
346. of Beersheba (1)
347. of Bermingham (1)
348. of Bernica (16)
349. of Bernicia (4)
350. of Berry Pomeroy (1)
351. of Berwick (1)
352. of Blantyre (1)
353. of Bodvel (1)
354. of Borthwick (2)
355. of Boscath (1)
356. of Bothwell (1)
357. of Braytoft (1)
358. of Bretargh (1)
359. of Bristol (1)
360. of Britons (1)
361. of Brittany (1)
362. of Brotherton (1)
363. of Buchan (2)
364. of Bulgaria (1)
365. of Burlington (1)
366. of Caithness (7)
367. of Callendar (3)
368. of Cambridge (11)
369. of Cardigan (1)
370. of Carew (1)
371. of Carlisle (1)
372. of Carrick (7)
373. of Cathcart (1)
374. of Chattan (10)
375. of Cheddar (1)
376. of Chester (3)
377. of Chesterfield (1)
378. of Chisholm (1)
379. of Cimmerians (11)
380. of Cinneal Eoguin (1)
381. of Clarence (4)
382. of Colchester (1)
383. of Connacht (1)
384. of Connaught (4)
385. of Corbi (1)
386. of Cornwall (28)
387. of Cranntock (1)
388. of Cumbria (2)
389. of Dalradia (6)
390. of Deheubarth (1)
391. of Deira (2)
392. of Denia & Balearic (1)
393. of Denmark (2)
394. of Desmond (1)
395. of Devon (3)
396. of Dimitia (1)
397. of Docwra (1)
398. of Dol (5)
399. of Dorset (1)
400. of Douni (2)
401. of Draffen (1)
402. of Dublin (9)
403. of Dule (1)
404. of Dull (1)
405. of Dunbar (23)
406. of Durham (3)
407. of Dyfed (4)
408. of East Anglia (11)
409. of Eccles (2)
410. of Egypt (11)
411. of England (80)
412. of Essex (4)
413. of Ethod (1)
414. of Färlä (1)
415. of Fasselane (1)
416. of Fife (5)
417. of Finland (1)
418. of Flint (1)
419. of Folkestone (1)
420. of Foremark (1)
421. of Frankton (1)
422. of Frombourg (1)
423. of Galacia (1)
424. of Galbraith (2)
425. of Galicia (3)
426. of Gall (1)
427. of Galloway (3)
428. of Gask (1)
429. of Gibeah (2)
430. of Gilsland (3)
431. of Gloucester (13)
432. of Granada (1)
433. of Greece (1)
434. of Greenwille (2)
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436. of Grindreth (1)
437. of Gwent (1)
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439. of Hadeland (2)
440. of Harrington (1)
441. of Haselden (5)
442. of Hastings (1)
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446. of High Ireby (1)
447. of Holland (10)
448. of Hordaland (1)
449. of Huntingdon (10)
450. of Huntington (5)
451. of Ireby (1)
452. of Ireland (14)
453. of Isbell (2)
454. of Islay (1)
455. of Israel (1)
456. of Italy (2)
457. of Jerusalem (3)
458. of Jordan (1)
459. of Jotbah (1)
460. of Judah (18)
461. of Jutland (3)
462. of Kendal (1)
463. of Kent (30)
464. of Khazaria (2)
465. of Kherait (3)
466. of Kildare (1)
467. of Killeen (2)
468. of Kinalmeaky (1)
469. of Kingsley (6)
470. of Kish (10)
471. of Lagash (1)
472. of Lancaster (8)
473. of Leinster (9)
474. of Lennox (24)
475. of Lethington (1)
476. of Lethra (2)
477. of Levanach (2)
478. of Levanax (1)
479. of Levenach (1)
480. of Libnah (1)
481. of Lincoln (3)
482. of Loarn (1)
483. of Lochaber (8)
484. of Lochore (1)
485. of Lorn (6)
486. of Lot (2)
487. of Lumley (7)
488. of Lundy (1)
489. of Luss (2)
490. of Lyon Logie (1)
491. of Macedonia (1)
492. of Man (5)
493. of Man & Dublin & the Isles (1)
494. of Mar (6)
495. of Marr (1)
496. of Mawddy (1)
497. of Meirionydd (2)
498. of Menteith (2)
499. of Menteth (2)
500. of Mercia (71)
501. of Mexico (2)
502. of Middleton (1)
503. of Misterton (1)
504. of Moab (2)
505. of Montal (1)
506. of Montenegro (1)
507. of Montifex (1)
508. of Montivilliers (1)
509. of Monymusk (1)
510. of Moray (5)
511. of More (2)
512. of Mostyn (1)
513. of Moynet (2)
514. of Munster (2)
515. of Murdistown (1)
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517. of Newton (2)
518. of North Wales (1)
519. of Northampton (1)
520. of Northhampton (1)
521. of Northumberland (7)
522. of Northumbria (20)
523. of Norway (1)
524. of Nottingham (2)
525. of Novgorod (1)
526. of Orbe, Switzerland (1)
527. of Orkney (21)
528. of Orkney & Caithness (1)
529. of Ormonde (1)
530. of Osborn (1)
531. of Osraige (1)
532. of Osrhoene (1)
533. of Ossory (3)
534. of Persia (1)
535. of Portugal (3)
536. of Powis (1)
537. of Powys (2)
538. of Raby (1)
539. of Raleigh (1)
540. of Rama (2)
541. of Ravensworth (2)
542. of Rhos (1)
543. of Rigsby (2)
544. of Ross (10)
545. of Rosse (1)
546. of Rumah (1)
547. of Ruthven (1)
548. of Rutland (1)
549. of Salisbury (3)
550. of Saltmarsh (1)
551. of Sanford (3)
552. of Scotland (73)
553. of Scots (1)
554. of Scottish Dalradia (1)
555. of Scythia (1)
556. of Sens (1)
557. of Shinar (1)
558. of Shropshire (2)
559. of Sibton (1)
560. of Sicambri (15)
561. of Siluria (2)
562. of Skipwith (1)
563. of Slesvik (1)
564. of Solarys (1)
565. of South-Gyrwas (1)
566. of Spain (2)
567. of Sparshot (1)
568. of St. Martin (1)
569. of St. Sever (1)
570. of Stanton (1)
571. of Stra... (2)
572. of Strathbogie (1)
573. of Strathclyde (14)
574. of Strathearn (21)
575. of Strathnaver (2)
576. of Sula (1)
577. of Sura (1)
578. of Surrey (2)
579. of Talou (1)
580. of Tamworth (1)
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582. of the Angles (3)
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584. of the Balearic Isles (1)
585. of the Baltic Goths (1)
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587. of the Gainas (1)
588. of the Goths (1)
589. of the Iceni (1)
590. of the Isle of Wight (1)
591. of the Isles (5)
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593. of the Kumans (2)
594. of the Mountains (2)
595. of the Obotrites (3)
596. of the Ostrogoths (5)
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598. of the Picts (17)
599. of the Saxons (2)
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601. of the Visigoths (14)
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606. of Torginton (2)
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614. of Ur & Agade (3)
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617. of Wallingford (2)
618. of Warwick (9)
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622. of Wessex (46)
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633. of York (19)
634. of Yorkshire (7)
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642. Offerhaus (3)
643. Offerman (104)
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698. Ohman (2)
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739. Olcott (5)
740. Old (3)
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744. Oldcastle (8)
745. Olde (14)
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